Improvement in power-loom for weaving ingrain-carpets



. tiu'iteni tant @tutti ANDREW MURRAY, OF LOWELL, MASSACHUSETTS, ASSIGNOR TO LOWELL MANUFACTURING COMPANY, OF SAME PLACE.

Letters Patent No. 89,065, dated April 20, 1869.

IMPROVEMENT IN POWER-LOOM PQR WEAVING- INGRAIN-CARPETS.

The Schedule referred to in these Letters Patent and making part oi' the same.

Be it known that I, ANDREW MURRAY, of Lowell, in the'county of Middlesex, and State of Massachusetts, have invented certain new and useful Improvements in Ingram-Carpet Power-Looms; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a front elevation of my improvements, and suchother parts of the loom as are necessary to exemplify them;

Figure 2, an end elevation of the same; and

-Figure 3, a horizontal section taken on the red line A B in fig. 2.

Figure 4 represents my invention ina modified form.

Ingram-carpet power-looms, which operate a double series of shuttles, have their shuttle-boxes detached from the lay, and supported bypendulous frames, there being one such frame at each side of the loom.

To bring the two series of shuttle-boxes into alternate action, the pendulou'sframes arel caused to vibrate, and to swing to or ti'o during the time the lay bca-ts up the cloth, and the shuttles are at rest.

The pendulous frames, with their shuttle-boxes, are

necessarily heavy, and to move them in quick succession, and bring them to a stationary position, in a proper line with the reed, for the passage ofthe shuttles, without shock or jarring of the mechanism, is of much im portauce to the successful working of the loom.

The mode of vibrating the pendulous frames, heretofore practised, is described in a patent for improvements in power-looms for weaving ingrain-carpcts,

granted to E. B. Bigelow, February 18, 1846, and reissued September 25, 1849. p

By the mode just referred to, motion is transmitted from a cam to the pendulous frames, through'an oscillating shaft, which extends across. the loom from side to side, and operates two oscillating*crauk-sbatts, with cranks carrying rollers, which ply in slots formed in the frames, or in stands aiiixed to thc frames, the crankl arms being halt thelength of the motion to be imparted, so that by turning the crank-shafts half a revolution in either direction, they will severally vibrato the flames accordingly.

An objection to this mode of connecting the pendulons frames with the cam which operates them, arises from the loosencss of the connections, and the colisequent backlash and jarring ofthe frames when thc loom is suddenly stopped while the frames are in motion. Y

To obviatc this objection is the object ot' my invention, a part of which consists in connecting the pendulons frames with the cani or cams which actuate them, by vibrating c. nne.cting-bars, which are pivoted or hinge-jointed to the pendulous l'rames, and vibrate endwisc in the direction in which they swing, whereby the motion iinpartedby the cam or cams is transmitted to the pcndnlous frames more directly and steadily than has heretofore been done.

This part of my invention may be used with devices for operating both of the pendulons frames by one cam, or with devices for operating each peudnlous frame by a special cam.

Another part of my invention consists in combining a earn with `ach ofthe pendnlous frames, whereby the connections between the moving-power and the pendulous frames are more direct and steady than when both frames are actuated by one cam, as heretofore practised.

' And another part of Amy invention consists in uniting and vibrating the two pendulous frames by a revolving shaft, which extends across the loom from side to side, and carries two cams, by which the pendulous frames are severally actuated, the vibratory action of the cams being communicated to them by vibrating connecting-bars, as before explained.

By'referencc to the annexed drawings, the character and ope 'ation of my invention will now be readily understood. Y

The loom-rame is marked a.

The pendulous frames which support the double series of shuttle-boxes, are marked b.

Each frame has one ofthe series of shuttle-boxes, c, represented in connection with it, but it was deemed unnecessary to represent the other series, as the mode of constructing and arranging the double series'is wellv understood. j

The pendulous frames bare suspended from and vibrate on axes d, which may be supported by the loom-trame, or by beams connected with the millbuilding. f

` To the pendulous frames b..ncar their lower ends, vibratin g connecting-bars c are'pivoted or hin ge-j ointed, the pivots or hinge-joints `being marked f.

The rear ends of the vibrating connecting-bars eare bent and bolted together, as shown in iig. 3.

They are. also provided with slots, g, which receive arcvolving shaft, h, on which they slide, andby which they are guided and supported.

The revolving shafthI extends across the loom from side to side, and is supported by bearings i.

ln looms for weaving two-ply carpets, it is caused to revolve once to every two revolutions of the lay-shaft, and in three-ply looms, once to every three revolutions of the lay-shaft.

It carries' two cams, marked j, one for cach of the pendulous frames, which cams act onfriction-rollers k, and impart a vibratory movement to the vibrating connecting-bars e, which vibratory movement is communicated to the pendulous ii'aincs b by the vibrating colniecting-bars c, with which they are respectively connected.

The cams j are adjusted on the shaft Il, so as to bring their eccentric sides on opposite sides ofthe shaft, by which means they cause the pendulous frames to swing simultaneously in opposite directions.

In weaving somel kinds of carpets, however, it is desirable to have the pendulous frames swing in unison,

and in such cases the eccentric part of both the camsis placed on the same side of the shaft.

It will be obvious to persons acquainted with the construction of machinery, that the form and arrangement of the parts which compose my invention, may be varied without departing from its distinguishing features. As, for instance, instead of having a singlefaced cam to vibrate the pendulous frames, acting on one roller, to move them forward, and ou another to draw them back, as represented in the drawings, a grooved cam may be used, having one roller plying in its groove, which receives both the forward and backward actions of the cam.

Fig. 4 represents, also, a mode in which the form and arrangement of the parts which transmit the vibratory action ofthe cam to the pendulous frames may be varied.

Au oscillating shaft, Z, there being one such shaft at each side ofthe loom, carries two upright arms, m, which are connected with the pendulous frames b by the vibrating connecting-bars e, pivoted or hinge jointed thereto.

rI he shaft l also has another arm aiixed to it, which carries a roller, la.

A grooved cam, j, on the shaft h, acts on the roller k, and imparts a vibratory motion to the vibrating conuecting-bars e, which communicate the same motion to the pendulous frames, with which they are severally connected.

Having thus fully described my invention, and pointed out some of the modifications of which it is susceptible, without departing from its distinguishing principles,

What I claim, and desire to secure by Letters Pateut, is

The combination of the vibrating connecting-bars with the pendulous frames, herein described, when said vibratin g connecting-bars are pivoted or hinge-jointed to the pendulous frames, and communicate thereto the vibratory action of a cam or cams, substantially as specified.

I also claim, in combination with each of the pendulous frames, a cam, by which said pendulous frames are severally operated, substantially as described.

I also claim the combination of mechanism herein described, for uniting and vibrating the two pendulous frames, consisting cfa revolving shaft, extending across the looinfrom side to side, two cams, carried by said shaft, and vibrating connecting-bars, which severally communicate the vibratory action of said cams to the pendnlous frames, substantially as specied.

. ANDREW MURRAY. Witnesses:

LANDON ADAMS, A. A. BLANCHARD. 

